hinjaku_gakeshita_shinshi
Artist.
Japanese name: 貧弱崖下紳士 (Hinjaku Gakeshita Shinshi)
See also
* Pixiv account: http://www.pixiv.net/member.php?id=1458492
* Twitter account: http://twitter.com/Under_the_cliff
* Twitpic account (server stopped): http://twitpic.com/photos/Under_the_cliff
* Old twitter (deleted): http://twitter.com/Under_2nd